// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)

#pragma once


namespace abel {
namespace details {

ABEL_FORCE_INLINE periodic_worker::periodic_worker(const std::function<void()> &callback_fun,
                                                   std::chrono::seconds interval) {
    active_ = (interval > std::chrono::seconds::zero());
    if (!active_) {
        return;
    }

    worker_thread_ = std::thread([this, callback_fun, interval]() {
        for (;;) {
            std::unique_lock<std::mutex> lock(this->mutex_);
            if (this->cv_.wait_for(lock, interval, [this] { return !this->active_; })) {
                return; // active_ == false, so exit this thread
            }
            callback_fun();
        }
    });
}

// stop the worker thread and join it
ABEL_FORCE_INLINE periodic_worker::~periodic_worker() {
    if (worker_thread_.joinable()) {
        {
            std::lock_guard<std::mutex> lock(mutex_);
            active_ = false;
        }
        cv_.notify_one();
        worker_thread_.join();
    }
}

} // namespace details
}  // namespace abel
